National Repository of Grey Literature 81 records found  beginprevious72 - 81  jump to record: Search took 0.00 seconds. 
Seasonal and spatial variations of concentrations of metals in atmospheric aerosol and street dust in Brno and Ostrava
Vojtěšek, Martin ; Mikuška, Pavel ; Ličbinský, R. ; Adamec, V. ; Křůmal, Kamil
Study of elemental composition of PM10 and PM2.5 aerosols and street dust was performed in two different seasons and at two urban sites in the Czech Republic. Two localities with different potential sources were chosen for the identification of aerosol sources.
The study of cadmium - oxalic acid complexes using DPASV and ESI-MS
Jakl, M. ; Jaklová Dytrtová, Jana ; Tlustoš, P.
The combination of DPASV with ESI-MS allows a reliable detection of metal complexes with small organic ligands. The request to exact molecular mass is essential to stoichiometry design simultaneously with low concentration of the analyte in most of biological matrixes. By the analysis of model solution consisting of Cd(NO3)(2) and oxalic acid (OAH(2)) these structures were identified: [Cd(OAH(2))(H2O)(2)](+), [Cd(OAH(2))(H2O)(3)](+), and [Cd(OAH(2))(H2O)(2)(CH3OH)](+). They were also found in soil solution.
Phytoremediation of radionuclides and metals in soil and waste waters
Soudek, Petr ; Valenová, Šárka ; Plojhar, V. ; Vaněk, Tomáš
Heavy metals and radionuclides are not chemically degradable and possibility of their removing by in situ methods is limited. In the last years are increasingly used plants not only for biomonitoring, but also for remediation.
Identification of Bounds between Qualitative Parameters of Aerosols and Their Place of Occurence
Tydlitát, Vratislav ; Pekárek, Vladimír ; Šyc, Michal ; Schwarz, Jaroslav ; Karban, Jindřich
Results of measurements of aerosols obtained by 24hour taking in two localities in Prague during the year 2004 and in three localities during the year 2005 are presented.
Laser cutting of metals and glass
Polák, Marek ; Chmelíčková, Hana ; Stranyánek, Martin
This paper describes the technology of cutting thic carbon steels of thickness up to 1mm using pulsed Nd:YAD laser and the results of the experiments of cutting glass continous CO.sub.2 laser.
Mobility of manganese in aquatic ecosystems
Miholová, D. ; Száková, J. ; Vysloužilová, M. ; Kolihová, D. ; Pokorný, Jan
Concentration of Mn in sediment, water and plant biomass was studied in eutrophic fishponds of Třeboň Biosphere Reserve.
Mobility of manganese in aquatic ecosystems
Miholová, D. ; Pokorný, Jan ; Száková, J. ; Vysloužilová, M. ; Kolihová, D.
Concentration of Mn in sediment, water and plant biomass was studied in eutrophic fishponds of Třeboň Biosphere Reserve.
Růst cen drahých kovů
Krčmař, Jan ; Kollár, Miroslav (advisor) ; Fiala, Martin (referee)
Tato práce se zabývá růstem cen drahých kovů a zaměřuje se na zlato, stříbro a platinu. Nejprve popisuje rozdělení komodit, mezi které tyto vzácné kovy patří. Ceny sledovaných kovů za posledních 10 let rostou a tato práce hledá důvody tohoto růstu. Cena se na trhu tvoří vztahem mezi nabídkou a poptávkou. Proto u každého kovu sleduji jak jeho těžbu (nabídku), tak i jeho využití (poptávku). Čína a Indie patří mezi největší poptávající země zlata a stříbra, a proto se jim věnuji podrobně. Na konci každé kapitoly uvádím důvody růstu cen jednotlivých kovů a zkoumám vztahy mezi nimi.

National Repository of Grey Literature : 81 records found   beginprevious72 - 81  jump to record:
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